In astronomy, a light-year is a unit of ___. A. time B. distance C. speed D. weight 相关知识点: 试题来源: 解析 B。在天文学中,光年是距离的单位,所以选 B。A 选项“time”是时间;C 选项“speed”是速度;D 选项“weight”是重量,均不符合光年的定义。反馈 收藏 ...
In the study of the universe, the term “light - year” is often used. A light - year is a unit of ___. Which option is correct? A. time B. length C. speed D. mass 相关知识点: 试题来源: 解析 B。解析:在天文学中,“光年”是一个长度单位,用于衡量天体之间的距离,而不是时...
百度试题 结果1 题目11. “Light year" is a unit of BA. brightnessB. distanceC. timeD. speed 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
A light year is a unit of what? Distance: Suppose a painter moves on the ground by following a definite path. Here, the measurement of the length covered by the painter is termed as the distance covered by him. In the SI unit system, it is measured in meter. However, the distance ha...
What is a light year used to measure?Light YearA 'light year' is a unit of measurement that is equal to the distance that light can travel in one year. One light year is equal to about 5,878,625,400,000 miles.Answer and Explanation: ...
A light year is a measure of ___. A. time B. distance C. speed D. mass 相关知识点: 试题来源: 解析 B。本题考查光年的概念。光年是长度单位,是计量天体间距离的单位,所以答案是 B。选项 A“time”是时间;选项 C“speed”是速度;选项 D“mass”是质量。反馈...
Light year is a unit of measurement of View Solution Which of the following are not a unit of time ? (a) second (b) parsec ( c) Year (d) Light year View Solution Exams IIT JEE NEET UP Board Bihar Board CBSE Free Textbook Solutions ...
百度试题 结果1 题目Light year is a unit to measure time.正确错误 相关知识点: 试题来源: 解析 错误 反馈 收藏
Why Is a Light-Year a Unit of Distance Rather Than a Unit of Time?Byline: Bill Robertson Brian Diskin There are lots of issues associated with measurement...Robertson, BillNational Science Teachers AssociationScience and Children
because “light year” has the word “year”, which is normally a unit of time. Even so, light years show distance. We are used to showing distances in miles or kilometers, depending on where we live. We know how long a mile or a kilometer is—we are comfortable with these units be...